EP 0355787 B1 19941005 - Fuel filter with a heating element and integrated electronic control device.
Title (en)
Fuel filter with a heating element and integrated electronic control device.
Title (de)
Kraftstoffilter mit Heizelement und integrierter Leistungselektronik.
Title (fr)
Filtre à carburant avec élément de chauffage et dispositif de commande électronique intégré.
Publication
Application
Priority
DE 3828525 A 19880823
Abstract (en)
[origin: EP0355787A2] Built into the filter head of a fuel filter, especially for diesel internal-combustion engines, is a heating element and a logic and power unit. The logic and power unit contains a fuel-temperature detection circuit, a battery-voltage monitoring circuit, a control logic, a suppressor circuit and circuit breakers. It has two connections, one of which is taken to the battery potential and the second of which is taken to a terminal of the ignition lock. With the ignition switched on, the logic and power unit detects whether heating of the fuel is required on the basis of the temperature measurement. By means of the monitoring of the battery voltage, it is possible to detect whether the starter of the motor vehicle is actuated, whereupon the circuit breakers interrupt the current supply to the heating element. The advantage of the arrangement is the small number of connecting leads between the individual functional components and the small number of connection terminals. A compact construction, economical assembly and a low weight are thereby achieved. The operational reliability and service life are increased by the elimination of mechanical parts.
IPC 1-7
IPC 8 full level
F02M 31/12 (2006.01); F02M 31/125 (2006.01); F02M 37/22 (2006.01); F02B 3/06 (2006.01)
CPC (source: EP US)
F02M 31/125 (2013.01 - EP US); F02M 37/30 (2018.12 - EP US); F02B 3/06 (2013.01 - EP); F02D 2200/0606 (2013.01 - EP); Y02T 10/12 (2013.01 - EP)
Citation (examination)
GB 2076056 A 19811125 - LUCAS INDUSTRIES LTD
Designated contracting state (EPC)
DE FR GB IT SE
DOCDB simple family (publication)
EP 0355787 A2 19900228; EP 0355787 A3 19900620; EP 0355787 B1 19941005; DE 3828525 A1 19900301; DE 3828525 C2 19920910; DE 58908473 D1 19941110
DOCDB simple family (application)
EP 89115456 A 19890822; DE 3828525 A 19880823; DE 58908473 T 19890822